1426641187 has 4 divisors (see below), whose sum is σ = 1429862040. Its totient is φ = 1423420336.

The previous prime is 1426641169. The next prime is 1426641197. The reversal of 1426641187 is 7811466241.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1426641187 - 2²⁷ = 1292423459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1426641107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1609762 + ... + 1610647.

It is an arithmetic number, because the mean of its divisors is an integer number (357465510).

Almost surely, 2^1426641187 is an apocalyptic number.

1426641187 is a deficient number, since it is larger than the sum of its proper divisors (3220853).

1426641187 is an equidigital number, since it uses as much as digits as its factorization.

1426641187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3220852.

The product of its digits is 64512, while the sum is 40.

The square root of 1426641187 is about 37770.9039738262. The cubic root of 1426641187 is about 1125.7404013666.

The spelling of 1426641187 in words is "one billion, four hundred twenty-six million, six hundred forty-one thousand, one hundred eighty-seven".